| 群相可控光学延迟线色散特性分析 |
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| 引用本文： | 邵永红,何永红,王淑霞,马辉.群相可控光学延迟线色散特性分析[J].光学精密工程,2006,14(6):965-968. |
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| 作者姓名： | 邵永红 何永红 王淑霞 马辉 |
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| 作者单位： | 清华大学,深圳研究生院,广东,深圳,518055 |
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| 摘 要： | 分析了光学相干层析(OCT)成像系统的色散特性。分析表明,系统色散与振镜离焦量成正比关系,且在一倍焦距以内为负色散,在一倍焦距以外为正色散。设计了纵向分辨率为8 μm的OCT系统,测得振镜位于傅里叶透镜焦点外0.5 mm处时,系统产生的色散值约为77 fs2,实验结果与理论相符合。
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| 关 键 词： | 光学相干层析 色散 干涉 光学延迟线 |
| 文章编号： | 1004-924X(2006)06-0965-04 |
| 收稿时间： | 2006-04-12 |
| 修稿时间： | 2006-10-08 |
Analysis on dispersion characteristics of group-phase-controllable optical delay line |
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| SHAO Yong-hong,HE Yong-hong,WANG Shu-xia,MA Hui.Analysis on dispersion characteristics of group-phase-controllable optical delay line[J].Optics and Precision Engineering,2006,14(6):965-968. |
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| Authors: | SHAO Yong-hong HE Yong-hong WANG Shu-xia MA Hui |
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| Affiliation: | Graduate School at Shenzhen , Tsinghua University, Shenzhen 518055, China |
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| Abstract: | The dispersion characteristics of optical coherence tomography (OCT) system were particularly analyzed. It is found that the dispersion is proportion to the defocus distance of a galvanometer, with negative in the focus length, dispersion, and with possive dispersion out the focus length. A OCT with spatial resolution of 8 μm is designed. The dispersion of 77 fs2 is measured in this OCT system when the galvanometer is 0.5 mm far away from the focal length of Fourier lens. The relation between dispersion and the distance away from focus is experimentally validated, and the experimental results are agreed with theory well. |
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| Keywords: | Optical Coherence Tomography(OCT) dispersion coherence optical delay line |
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